I have been considering various scenarios over the last few days. Turkey will receive 44 Eurofighters – around 24 of them from Qatar and Oman between 2026 and 2027/28, and the remaining 20 new Eurofighters from 2030 onwards.
There are currently 12 new F-110 engines available for six TAI KAAN prototypes. I think it is very likely that the US will continue to block larger deliveries of F-110 engines due to the geopolitical situation and, above all, because of Greece, Israel, etc. With a bit of luck, it may be possible to secure engines for four to six more aircraft – but probably not many more than that.
A conceivable interim solution would be to cannibalise part of the older F-16 fleet (Block 30/40). TEI could overhaul these old engines and replace worn parts, then use them temporarily in the TAI KAAN. This would allow the engines to be used in the aircraft for four to five years, until the TF-35000 engines are ready for series production in around 2033/34.
This would allow around 30 TAI KAANs (6 from the prototype batch + 24 TAI KAANs with overhauled F-16 engines from 48 older F-16s, which would be cannibalised) to be produced by 2030. Together with 44 Eurofighters and around +-200 modernised F-16 Özgür IIs, Turkey's air combat capability would be relatively solidly secured until 2032, as drones of various classes would be added as multipliers – this would significantly narrow the gap with Greece and Israel.
If more Eurofighters are added by 2032, more older F-16s could be cannibalised and more TAI KAANs built with general overhauled F-110 engines.
From 2033/34 onwards, only TAI KAAN with TF-35000 engines will be used, and the existing TAI KAAN fleet will be completely converted to TF-35000 as soon as the F-110 engines reach the end of their service life.
I would use more than half of the 48 cannibalised aircraft as spare parts donors for the existing F-16 fleet, and I would conduct a study on the remaining 10 aircraft to see if the TF-35000 could be integrated into the F-16 to provide the F-16 fleet with a possible Özgür III upgrade, with TEI TF 35000 (throttled down to 30,000 lbf).